AirHint found the following cheapest return flights from Brussels (BRU) to Keflavik (KEF) in May 2026 (see full year).

Return flights

02 May - 10 May	Ryanair
18 May - 27 May	easyJet
02 May - 13 May	Lufthansa
06 May - 09 May	Brussels Airlines
02 May - 11 May	Ryanair
05 May - 08 May	Ryanair
24 May - 31 May	Ryanair
01 May - 06 May	Scandinavian Airlines
02 May - 07 May	Scandinavian Airlines
01 May - 04 May	Scandinavian Airlines
23 May - 03 Jun	Scandinavian Airlines
30 May - 13 Jun	Lufthansa
23 May - 03 Jun	Icelandair	direct
30 May - 13 Jun	Icelandair	direct

Also check the deals for one-way flights from Brussels to Keflavik in May.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Brussels to Keflavik in May from $209

Return flights